Sampler.



No. 773.819. PATENTED NOV. 1, 1904. F. T. SNYDER. SAMPLER. APPLICATIONFILED JUNE 4, 1903. N0 MODEL. ZSHEETS-SHBET 2.

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nrneg UNiTED STATES Patented November 1, 1904;.

PATENT OEEicE.

SAMPLER.

SPECIFICATION forming part of Letters Patent No. 773,819, dated November1, 1904.

I Application filed June 4, 1903. Serial No. 160,017. (No model.)

T 0 all 1071/0712, it may concern:

Be it known that I, FREDERICK T. SNYDER, a citizen of the United States,residing at Oak Park, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Samplers, (Case No.10,) of which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to tollers or samplers, such as may be employed forthe purpose of obtaining a fair sample ofa large quantity of ore and foraccurately dividing a quantity of grain or similar material into partsof any de sired ratio.

The principal objects of my invention are to provide a sampler whichwill accurately divide the ore to be sampled into the desiredproportional parts and at the same time one which shall occupy acomparatively small space and require but a small amount of head roomwhere gravity eonveyers or troughs are used for conveying the materialsto be sampled.

The further objects of my invention are to provide a sampler of greatsimplicity and durability in construction.

As is well known by those skilled in the art, when ores are conveyedthrough conveyertroughs between devices utilized for the purpose ofcarrying out various milling operations the fine ores tend to collectnear the bottom and sides of the trough, while the coarser materialstravel in paths near the center of the trough.

As distinguished from certain samplers of the prior art, my inventionprovides means whereby sections are cut from a practically continuousstream of materials passing through the trough, these sections being ofthe same thickness throughout their area, whereby the sampler accuratelyobtains an equal proportion of all grades of material passing throughthe conveyer-troughs, thereby making the sample deflected by the samplera fair average of the ore which is being sampled thereby.

It is a common practice to convey ores from one device to another bymeans of inclined conveyer-troughs, through which the ore travels, dueto the force of gravity. In order that a mill in which such a conveyersystem is employed may not be of excessively great height, it isdesirable to make the vertical distance between successiveoperating-machines as small as possible and also to make-the verticalfall while traveling through any one of the devices used in the millingof the ore as small as possible.

It is one of the objects of my invention to provide a sampler in whichthe vertical fall of the materials to be sampled in passing through thesampler shall be comparatively small.

As distinguished from many samplers of the prior art, my improved deviceprovides means whereby the major portion of the ore to be sampled passesthrough the feed-trough, the sampler, and the discharge-trough insubstantially the same general direction and in practicallya continuousstream. The portion of the ore which is removed as a sample and whichusually is only a small percentage of the total quantity passed throughthe sampler is deflected in its course into a suitable receptacle.

My invention will be readily understood by reference to the accompanyingdrawings, in which Figure 1 is a central longitudinal cross-sectionalview taken on line 1 l of Fig. 2. Fig. 2 is an end elevation of therotating member of my improved sampler, the inclosing housing beingremoved to more clearly illustrate the interior construction. Fig. 3 isa crosssectional View taken on line 3 3 of Fig. 2.

I have illustrated bearings 5 5, within which is rotatably mounted theshaft 6, provided with a driving-pulley 7, which may be connected bymeans of a belt (not shown) with any desired source of power.

Within the housing 2A the sampler-ring 8 is fixed upon the forward endof the shaft 6 to be rotated thereby. This ring is of conical shape andthe material to be sampled passes through said ring, along the lowerportion of the inner surface thereof. The material is led in by theinclined chute 13 and feed-box l 14, and after passing through the ringis, discharged therefrom into the similarly-inclined conveyor-trough 23,so that the main body of the material flows in a practically continuousstream through the sampling apparatus without requiring change ofdirection. An open ing 16 is provided in the circumference of the ring,through which a portion of the material is diverted when in the rotationof the ring this opening comes beneath the body of material movingthrough the ring. In the preferred form of my invention, as shown, thisopening is in the form of a deflectingchute or sample-spout having sidewalls or raised margins 18 19 and a bottom wall 17, inclined toward thefront of the sampler. This bottom wall 17 of the sample-spout forms asort of blade or deflector which in the retation of the ring istemporarily interposed in the path of the material flowing through thering to divert said material through the opening '16 into asample-receiver 22. The wall or deflector-plate 17 is inclined at anabrupt angle, preferably almost a right angle, to the direction ofmovement of the mate rials flowing through the ring. The side walls 1819 of the sampler opening or chute 16 extend toward the shaft 6 inplanes which preferably do not pass through the axis of said shaft, butrather are substantially tangential to a cylinder which might bedescribed about said axis. The cutting edges 20 21 of said walls 18 19are preferably substantially parallel to the axis of the shaft,subtending at all points equal angles at said axis, so that the samplecut from the stream of material may be of uniform thickness throughout.Immediately at the rear of the cone and preferably constituting a partof the supportingframework thereof is a circular disk 11, said diskbeing here shown as cast integrally with the hub or spider whichsupports said conical ring. This disk forms awall or shield at the rearof the rotating chamber, an annular opening being left between the edgeof the disk and the edge of the conical ring, through which the streamof material may pass out of the ring, except at the point where theblade or bottom wall 17 of the sampler-chute is located. Said wall 17forms an angular exten sion from the periphery of the disk and may becast integrally with said disk.

An annular flange is preferably provided near the edge of the conicalring 8, sloping forward oppositely to the incline of the cone. Thisflange is located outside or beyond the outer edge of thesampler-opening 16, so as to form a lip for the sampler-spout. The outeredge of the cone 8 and the flange together form a groove around theperiphery of the rotating ring, \I-shaped in cross-section, and thehousing 24 is preferably provided with a partition wall or rib 26,having a circular opening adapted to accommodate said grooved portion ofthe ring, the rims whereof .lie on either side of said partitionwall.

A counterweight 25 is preferably cast upon the outside of the ring 8 tocounterbalance the weight of the walls 17 18 19 of the deflecting-chute.

The operation of my improved sampler may be described as follows: Thering 8 is rotated by means of power supplied through the pulley-wheel 7in the direction indicated by the arrow 28. The ore or other material tobe sampled is fed through the feed-conveyor 13 and the box 1 1 withinthe smaller opening 15 of the ring 8. During the larger part of therevolution of the ring 8 the materials fed into the ring from thefeed-conveyor trough 13 slide across the interior conical surface of thering, and thence into the conveyer-trough 23. hen the deflecting-chute16 passes under the point at which materials are discharged from theconveyer-trough into the conveyorring, the materials are receivedbetween the side walls 18 and 19 of the deflecting-chute 16 and strikingthe bottom wall 17 are deflected toward the front of the sampler andinto the sample-trough 22. edges 20 and 21 of the side walls 18 and 19being parallel with each other and with the axis of rotation of theconical ring, these cutting edges describe a cylindrical surface andtravel in what may be termed a cylindrical path. Thus the interval oftime during which ore passes between the cutting edges of thedefleeting-chute from any one portion of the stream fed within thesampler is equal to the time during which materials from any otherportion of the stream passes between the cutting edges. In this mannerthere is cut during each revolution of the ring 8 a section from thestream of ore passing through the feed-trough, this section being ofuniform thickness throughout. The distance between the cutting edges 20and 21 may be made such that any desired percentage of the totalquantity of materials passing through the sampler may be deflected intothe sample trough 22. The wall 26 andthe forked edges of the ringprevent materials from passing from one side of the ring to the otherwithout passing through the ring.

The housing may be of any suitable construction to prevent the escape ofdust from the sampler. The side walls 18 and 19 of the deflecting-chute16 are laid back away from the direction of rotation in order that thefalling ore will not be struck by these walls during its downwardpassage.

It will be seen that the general direction of movement of the majorportion of the materials passing through the sampler is substantiallyconstant and unchanged. This in connection with the fact that the ore tobe sampled is both fed to the rotating element and discharged therefrombelow the axis of rotation The dividing enables me to construct asampler in which the vertical fall of materials passing therethroughshall be comparatively small.

While I have herein shown and described one preferred embodiment of myinvention, it will be apparent to those skilled in the art that manymodifications may be employed without departing from the spirit thereof.I do not wish to limit myself, therefore, to the precise disclosureherein set forth; but,

Having described my invention, I claim as new and desire to secure byLetters Patent 1. In a sampler, the combination with a conical ring,having a slot through the circumference of said ring, raised marginsalong the sides of said slot, a disk concentric with said ring forming ashield at one end of said slot, and an annular flange on the outersurface of said ring, of a housing surrounding said ring having apartition-wall lying between said flange and the lower rim of said ring,means for delivering material to be sampled to the inner surface of saidring through the smaller end thereof, and means for rotating said ring.

2. Inasampler, the combination with a conical ring, having a slotthrough the circumference of said ring, raised margins along the sidesof said slot, a disk concentric with said ring forming a shield at oneend of said slot, and an annular flange on the outer surface of saidring, of means for delivering materials to be separated to the innersurface of said ring through the smaller end thereof, and means forrotating said ring.

3. In a sampler, the combination with a conical ring, having a slotthrough the circumference of said ring, raised margins along the sidesof said slot, and a disk concentric with said ring forming a shield atone end of said slot, of means for delivering material to be sampled tothe inner surface of said ring through the smaller end thereof, andmeans for rotating said ring.

4:. In a sampler, the combination with a conical ring, having aslotthrough the circumference of said ring, and raised margins along thesides of said slot, said margins lying in planes tangent to a cylindergenerated about the axis of said ring, of means for delivering materialto be sampled to the inner surface of said ring through the smaller endthereof, and means for rotating said ring.

5. In a sampler, the combination with a conical ring, having a slotthrough the circumference of said ring, and raised margins along thesides of said slot, said margins subtending at all points equal anglesat the axis of said ring, of means for delivering material to be sampledto the inner surface of said ring through the smaller end thereof, andmeans for rotating said ring.

6. In a sampler, the combination with a conical ring, having an openingthrough the circumference of said ring, and a raised margin about saidopening, of means for delivering material to be sampled to the innersurface of said ring through the smaller end thereof, and means forrotating said ring.

7. In asampler, the combination with aconical ring rotatable upon ahorizontal axis, said ring having a sample-opening through itscircumference, of means for feeding material to the inner surface ofsaid ring through the smaller end thereof, and a deflector-plate 17extending from the lower edge of said opening at an angle to the surfaceof the ring, in position to divert a section of material through saidopening in the rotation of said ring.

8. In a sampler, the combination with a ring adapted to rotate about ahorizontal axis, and having an opening through the circumference of saidring, a deflecting-chute mounted within the ring, the edges of the sidewalls of said chute being parallel to said axis, of means for deliveringmaterial to be sampled to the inner surface of said ring, and means forrotating said ring.

9. In a sampler, the combination with a conical ring adapted to rotateupon a horizontal axis, of a feed-chute 13 and adischarge-chute 23 insubstantialalinement with each other and with the lower inside surfaceof said ring, said ring havinga sample-opening in the side thereof, andmeans for deflecting through said opening a section of the materialpassing through said ring, during the rotation of said ring, asdescribed.

10. In a sampler, the combination with a feed-spout, of a disk, having asample-spout adapted to rotate therewith about the axis of said disk andby said feed-spout, the bottom of said sample-spout when passing saidfeedspout being directed downwardly away from said axis andsubstantially perpendicular to the bottom of said feed-spout, and meansfor rotating said sample-spout. I

11. In a sampler, the combination with a conical ring adapted to rotateabout a horizontal axis, having a sample-spout carried by said ring, thebottom of said spout being substantially perpendicular to the adjacentelements of the interior surface of said conical ring, the dividingedges of said spout being substantially parallel with the axis of saidring, and a disk concentric with said ring and partially closing thelarger opening thereof, means for delivering material to be sampled tothe lower inner surface of said ring through the smaller openingthereof, and means for rotating said ring.

12. In a sampler, the combination with a horizontally-rotatable conicalring, of an in, clined conveyer-chute registering with the smaller endof said ring, a receiving-chute leading downwardly from the lowerportion of the larger end of said ring, to receive material passing fromthe conveyer-chute through the ring, said receiving-chute lying inapproximately the same plane as the conveyerchute, a sample-chute, and adeflector carried by said ring adapted during the rotation there- InWitness whereof I hereuntq subscribe my of to divert a section of saidmaterial into the name this 27th clay of May, A. D. 1903. sample chute;whereby the said material r r 1 7 passes through the conveyer-chute,ring and FIDEDERKK bNl receiving-chute in substantially the same di-WVitnesses: rectum, and its vertlcal fall is made compara- LYNN A.VILLIAMS, t1vely small. 1 JOHN STAHR.

